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# -*- coding: utf-8; mode: python; -*-
#
# GStreamer Debug Viewer - View and analyze GStreamer debug log files
#
# Copyright (C) 2007 René Stadler <mail@renestadler.de>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 3 of the License, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# this program. If not, see <http://www.gnu.org/licenses/>.
"""GStreamer Debug Viewer timeline widget plugin."""
import logging
from GstDebugViewer import Common, Data, GUI
from GstDebugViewer.Plugins import *
import gtk
class SearchOperation (object):
def __init__ (self, model, search_string, search_forward = True, start_position = None):
self.model = model
self.search_string = search_string
self.search_forward = search_forward
self.start_position = start_position
class SearchSentinel (object):
def __init__ (self):
self.dispatcher = Common.Data.GSourceDispatcher ()
def run_for (self, operation):
self.dispatcher.cancel ()
self.dispatcher (self.__process (operation))
def abort (self):
self.dispatcher.cancel ()
def __process (self, operation):
model = operation.model
if operation.start_position is not None:
start_iter = model.iter_nth_child (None, operation.start_position)
else:
start_iter = model.iter_nth_child (None, 0)
if not operation.search_forward:
# FIXME:
raise NotImplementedError ("backward search not supported yet")
search_string = operation.search_string
col_id = model.COL_MESSAGE
model_get = model.get_value
iter_next = model.iter_next
YIELD_LIMIT = 1000
i = YIELD_LIMIT
tree_iter = start_iter
while tree_iter:
i -= 1
if i == 0:
yield True
i = YIELD_LIMIT
msg = model_get (tree_iter, col_id)
if search_string in msg:
self.handle_match_found (model, tree_iter)
tree_iter = iter_next (tree_iter)
self.handle_search_complete ()
yield False
def handle_match_found (self, model, tree_iter):
pass
def handle_search_complete (self):
pass
class FindBarWidget (gtk.HBox):
def __init__ (self):
gtk.HBox.__init__ (self)
label = gtk.Label (_("Find:"))
self.pack_start (label, False, False, 0)
self.entry = gtk.Entry ()
self.pack_start (self.entry)
self.show_all ()
class FindBarFeature (FeatureBase):
def __init__ (self):
FeatureBase.__init__ (self)
self.matches = []
self.logger = logging.getLogger ("ui.findbar")
self.action_group = gtk.ActionGroup ("FindBarActions")
self.action_group.add_toggle_actions ([("show-find-bar",
None,
_("Find Bar"),
"<Ctrl>F")])
self.bar = None
self.operation = None
self.sentinel = SearchSentinel ()
self.sentinel.handle_match_found = self.handle_match_found
self.sentinel.handle_search_complete = self.handle_search_complete
def scroll_view_to_line (self, line_index):
view = self.log_view
path = (line_index,)
start_path, end_path = view.get_visible_range ()
if path >= start_path and path <= end_path:
self.logger.debug ("line index %i already visible, not scrolling", line_index)
return
self.logger.debug ("scrolling to line_index %i", line_index)
view.scroll_to_cell (path, use_align = True, row_align = .5)
def handle_attach_window (self, window):
ui = window.ui_manager
ui.insert_action_group (self.action_group, 0)
self.log_view = window.log_view
self.merge_id = ui.new_merge_id ()
ui.add_ui (self.merge_id, "/menubar/ViewMenu/ViewMenuAdditions",
"ViewFindBar", "show-find-bar",
gtk.UI_MANAGER_MENUITEM, False)
box = window.widgets.vbox_view
self.bar = FindBarWidget ()
box.pack_end (self.bar, False, False, 0)
self.bar.hide ()
action = self.action_group.get_action ("show-find-bar")
handler = self.handle_show_find_bar_action_activate
action.connect ("toggled", handler)
self.bar.entry.connect ("changed", self.handle_entry_changed)
def handle_detach_window (self, window):
window.ui_manager.remove_ui (self.merge_id)
self.merge_id = None
def handle_show_find_bar_action_activate (self, action):
if action.props.active:
self.bar.show ()
self.bar.entry.grab_focus ()
else:
self.bar.hide ()
def handle_entry_changed (self, entry):
# FIXME: If the new search operation is stricter than the previous one
# (find as you type!), re-use the previous results for a nice
# performance gain (by only searching in previous results again)
del self.matches[:]
model = self.log_view.props.model
search_string = entry.props.text
if search_string == "":
self.logger.debug ("search string set to '', aborting search")
self.sentinel.abort ()
# FIXME: Set start position
self.logger.debug ("starting search for %r", search_string)
self.operation = SearchOperation (model, search_string)
self.sentinel.run_for (self.operation)
def handle_match_found (self, model, tree_iter):
line_index = model.get_path (tree_iter)[0]
self.matches.append (line_index)
if len (self.matches) == 1:
self.scroll_view_to_line (line_index)
elif len (self.matches) > 10000:
self.sentinel.abort ()
def handle_search_complete (self):
self.logger.debug ("search for %r complete, got %i results",
self.operation.search_string,
len (self.matches))
class Plugin (PluginBase):
features = [FindBarFeature]
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